If this make you think about pit dwelling, then yes, you are right, this is inspired by that type of dwelling, and yes, it is transformed to fit a contemporary space in Saijo, Japan.
These are the comments of the architect:
“When I create , I always think that I want to find the charm of the plan. A client is a couple with three children hoped there are bright openhearted space, and keeping the privacy. This site is a field before, and bearing stratum is in the minus one meter from the ground side.Therefore, we thought support according to the composition of not the ground improvement, but a half underground from the beginning of the plan. The leftover soil by excavating the ground was used to making the hill, that thing is enabled the function of the garden on the exterior and guard their privacy from, house’s neighborhood. The upper floors than a half underground are composed by only the pyrami-shaped roof, the lighting was token in the skylight.”
Architects: Suppose Design Office
Program: Personal house
Site area: 246 sqm
Building area: 50.41m
Total floor area: 115.51 sqm
Photographs: Toshiyuki Yano from Nacasa&Partners Inc.